: These CHR functions convert numeric ASCII values into characters to bypass security filters that might block specific words like "PIPE". 107 = k 72 = H 88 = X 67 = C Result: kHXC (the name of the pipe to listen to).
If you encountered this in a log or a search field, it is likely an automated probe by a security scanner or an attacker trying to identify vulnerabilities. CHR - Oracle Help Center : These CHR functions convert numeric ASCII values
: This part is intended to break out of a preceding SQL string (like a search filter or input field) by closing a single quote and a parenthesis. CHR - Oracle Help Center : This part
: This is the timeout argument in seconds. If the database takes exactly 5 seconds to respond, it confirms to an attacker that the system is vulnerable to SQL injection. : These CHR functions convert numeric ASCII values